X x x x x



(No Model.) I

v R. PATCH.

MAOHINE FOR REOIPROCIATINGITOO-LS.

No. 297,839. PatentedApr. 29, 1884.

WITNESSES: INVENTOR A @W W BY ATTORNEYS.

N PEIERS, Phuhz-Lillwgnphar. wnhingtcn. 0,0.

UNITED STATES PATENT Orricn.

FRED R. PATCH, or SUTHERLAND FALLS, VERMONT, ASSIGNOR or our- HALFTOREDFIELD rnoorron, or SAME PLACE.

MACHINE FOR RECIPROCATING TOOLS.

SPECIFICATION forming part of Letters Patent No. 297,839, dated April29, 1884-. I

Application filed January 11, 1884. (No model.)

To aZZ whom it may concern.-

The object of my invention is to provide a new and improved machine forreciprocating tools for cutting and drilling stones, wood, or othermaterial, which machine is Very simple in construction.

The invention consists in the combination with two cylinders, eachhaving an open anda closed end, and the ends of the cylinders beingconnected by a tube, of pistons contained in the cylinders, andpiston-rods projecting from the open ends of the cylinders. One of the.

pistons is reciprocated, and the pressure of the one reciprocates theother piston to which the tool is fastened. I

The invention also consists in various parts and details and combinationof the same, as willbe fully described and set forthhereinafter.

Reference is to be had to the accompanying drawings, forming part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a longitudinal elevation of my improved machine forreciprocating tools, parts being broken out. Fig. 2 is a longitudinalsectional elevation of the same. Fig. 3 is a longitudinal sectionalelevation of a modification of the same.

A cylinder, A, open at one end, has its opposite end connected by atube, B, with the end of a cylinder, O, the opposite end of which isopen. The cylinders A and G are surrounded by larger casings'A' and C,respectively, which are closed at the outer ends, and the said casings Aand O are connected by a tube, D, surrounding the tube B. The cylindersA and 0 contain the pistons E and F, respectively, the piston-rods E andF projecting from the upper ends of the cylinders and through the headson the ends of the casings A andC. The piston-rod Eis provided with 'der0; The tube K is surrounded bya handlewheel, or the said piston rod canbe connected with any other suitable devices for reciprocat ing it.

On the head, at the outer'end of the casing G, a guide-tube, K, isscrewed, through which the piston-rod F passes, which rod is pro videdat its outer end with a socket, L, for re ceiving the butt-end 0f thetool M. The tube B is provided with a'valve, Q, near the cylinpiece, N.

In the construction shown in Fig. 3 the easings A and G and the tube Daredispensed with, and the outer end of the cylinder 0 is provided witha head, P, having apertures Q,

or the outer end of the cylinder 0 can be left tubes Band D arepreferably made of rubber. 7 The operation is as follows: If the pistonE in the cylinder A is moved in the direction of the arrow a, the airwill be forced out of the open end of the cylinder A through the casingA, the tube D, and the casing G, into the open end of the cylinder 0,and will force the piston F in the direction of the arrow a, a partialvacuum being formed in the cylinder A and the tube B. If the piston E inthe cylinder A is forced in the inverse direction of the arrow at, theair inthe cylinder A and in the tube B is compressed and forces thepiston F in the inverse direction of the arrow, the air in the cylinder0 being forced out at the open end of the cylinder 0 and passing throughthe casing O, the tube D, and the casing A into the open end of thecylinder A, and so on alternately, whereby the tool M will bereciprocated.

" In the device shown in Fig. 3 the operation is similar, and is asfollows: If the piston E is moved in the direction of the arrow at, theair is forced out of the cylinderA at the open end,

and a partial vacuum is formed in the closed end of the cylinders A andO. Thereby the 5 piston F is moved in the direction of the arrow a. Ifthe piston E is moved in the inverse direction of the arrow to, the airin the cylinder A is compressed and forces the piston F in the cylinder0 in the inverse direction of the arrow a, the air in the cylinder Cbeing forced out through the apertures Q, and the air entering thecylinder A at the open end, and so on alternately, whereby the tool Mwill be reeiprocated.

By means of my improved machine comparatively little power is requiredto operate the tool.

The tool M can have any suitable kind of bit or cuttingcdge, and can beused for cutting or otherwise operating on stone, wood, metal, 8:0. Thewheel 3' can be revolved by hand machinery or in any other suitablemanner.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. In a tool-reciprocating machine, the combination,with two cylinders, each having an open and a closed end, and connectedtogether by a tube, of pistons in the said cylinders provided with'PiStOlhlOdS projecting from the open ends of the cylinders, and aregulating- Valve in the connecting-tube, substantially as herein shownand described.

2. The C6ll1bil1ttlb1],Wlth two cylinders, each having an open and 'aclosed end, the closed ends being connected by a tube, of a'piston ineach cylinder, a piston-rod 011 each piston, the piston-rods projectingfrom the open ends of the cylinders, closed casings surrounding thecylinders, and a tube connecting the casings and surrounding the tubeconnecting the cylinders, substantially as herein shown and described.

3. In a tool-reciprocating machine, the combination, with the cylindersA G, the tube B, connecting the cylinders, and the Valve in the saidtube, of the pistons E F, provided with rods E I ",and the guide-tube K,through described. I

FREDR. PATCH. Witnesses:

$A3IUEL A, Hownnn, CHARLES E. FERN.

